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ontology
onus
onward
onychogryphosis
onycholysis
onychomycosis
onychopathy
onychophoran
onychorrhexis
onychosis
-onym
onymous
onyx
oo-
ooch (1)
ooch (2)
oocyst
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onychorrhexis
on·y·chor·rhex·is [ ònnəkə réksiss ]


noun 
Definition:
 
corrugation of the nails: ridges in the fingernails or toenails, often accompanied by brittleness and dryness
[< Greek onukh-, stem of onux "nail, claw" + rhēxis "rupture" < rhēgnunai "break"]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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